Procedural Knowledge refers to information or knowledge that helps students to do something specific to a discipline, subject, or area of study. It also refers to methods of inquiry, very specific or finite skills, algorithms, techniques, and particular methodologies. (Bloom's Taxonomy)

• Knowledge of subject-specific skills and algorithms
• Knowledge of subject-specific techniques and methods
• Knowledge of criteria for determining when to use appropriate procedures

Procedural Knowledge refers to a sequence of steps by which frequently encountered problems may be solved.

Conceptual knowledge is an understanding of meaning. Students must understand the "why" of mathematical concept.

Procedural vs conceptual knowledge:
http://teachingmathliteracy.weebly.com/conceptual-vs-procedural-knowledge.html